<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>康师傅的后花园 - 国际象棋训练系统</title>
    <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap" rel="stylesheet">
    <link rel="stylesheet" href="/static/css/clash-royale.css?v=1.9.4">
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Nunito', -apple-system, sans-serif; background: #f5f5f7; min-height: 100vh; }
        .login-wrap {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
            z-index: 1;
        }
        .cr-card-gold {
            width: 100%;
            max-width: 440px;
            padding: 36px 32px 28px;
        }
        .cr-btn {
            width: 100%;
            justify-content: center;
            margin-bottom: 10px;
        }
        .cr-btn:last-child { margin-bottom: 0; }
        .form-group { margin-bottom: 18px; }
        .form-group label {
            display: block;
            font-size: 13px;
            color: #86868b;
            margin-bottom: 6px;
            font-weight: 700;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e5e5e7;
            border-radius: 12px;
            font-size: 16px;
            font-family: 'Nunito', -apple-system, sans-serif;
            background: #ffffff;
            color: #1d1d1f;
            transition: all 0.3s;
        }
        .form-group input:focus, .form-group select:focus {
            outline: none;
            border-color: #0071e3;
            box-shadow: none;
        }
        .form-group input::placeholder { color: #aeaeb2; }
        .message {
            padding: 12px 16px;
            border-radius: 12px;
            margin-bottom: 18px;
            font-size: 14px;
            display: none;
            font-weight: 600;
        }
        .message.error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
        .message.success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
        .hidden { display: none; }
        .role-selector {
            display: flex;
            gap: 12px;
            margin-bottom: 20px;
        }
        .role-option {
            flex: 1;
            padding: 14px;
            border: 2px solid #e5e5e7;
            border-radius: 14px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
            background: #ffffff;
        }
        .role-option:hover { border-color: #0071e3; }
        .role-option.active {
            border-color: #0071e3;
            background: rgba(0,113,227,0.06);
            box-shadow: none;
        }
        .role-option .icon { font-size: 22px; margin-bottom: 4px; }
        .role-option .label { font-size: 13px; color: #86868b; font-weight: 700; }
        .cr-btn-gold {
            background: #0071e3;
            color: white;
            box-shadow: none;
        }
        .cr-btn-gold:hover {
            background: #0077ed;
        }
        .forgot-link {
            display: block; text-align: center; margin-top: 10px;
            font-size: 12px; color: #0071e3; cursor: pointer; text-decoration: none;
        }
        .forgot-link:hover { text-decoration: underline; }
        @media (max-width: 768px) {
            .cr-card-gold { padding: 24px 18px; border-radius: 16px; }
            .role-option { padding: 10px; }
        }
    </style>
</head>
<body>
    <div class="login-wrap">
        <div id="toast"></div>
        <div class="cr-card cr-card-gold">
            <!-- Header row -->
            <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;">
                <div style="display:flex;align-items:center;gap:12px;">
                    <img src="/static/aiqiyi-logo.png" alt="Logo" style="width:48px;height:48px;border-radius:12px;object-fit:contain;">
                    <div>
                        <div style="font-size:18px;font-weight:800;color:#1d1d1f;">康师傅的后花园</div>
                        <div style="font-size:12px;color:#86868b;font-weight:600;">国际象棋训练系统</div>
                    </div>
                </div>
                <div style="display:flex;gap:6px;">
                    <button class="cr-btn-icon" id="cr-bgm-btn" onclick="Audio.bgmToggle()" title="背景音乐">🔇</button>
                </div>
            </div>

            <div id="message" class="message"></div>

            <!-- 登录表单 -->
            <div id="loginForm">
                <div class="form-group">
                    <label>邮箱</label>
                    <input type="email" id="loginEmail" placeholder="请输入邮箱地址">
                </div>
                <div class="form-group">
                    <label>密码</label>
                    <input type="password" id="loginPassword" placeholder="请输入密码">
                </div>
                <div style="display:flex;align-items:center;gap:8px;margin-bottom:14px;font-size:13px;color:var(--cr-text-muted);">
                    <input type="checkbox" id="rememberMe" style="width:auto;accent-color:#0071e3;">
                    <label for="rememberMe" style="font-weight:600;cursor:pointer;">记住账号</label>
                </div>
                <button class="cr-btn cr-btn-gold" onclick="handleLogin()">登录</button>
                <button class="cr-btn cr-btn-ghost" onclick="showRegister()">注册新账号</button>
                <a class="forgot-link" onclick="showForgotPassword()">忘记密码？</a>
            </div>

            <!-- 忘记密码表单 -->
            <div id="forgotForm" class="hidden">
                <p style="font-size:13px;color:var(--cr-text-muted);margin-bottom:14px;">输入注册邮箱，获取验证码重置密码</p>
                <div class="form-group">
                    <label>邮箱</label>
                    <input type="email" id="forgotEmail" placeholder="请输入注册邮箱">
                </div>
                <button class="cr-btn cr-btn-primary" onclick="sendResetCode()">发送验证码</button>
                <br><br>
                <div class="form-group">
                    <label>验证码</label>
                    <input type="text" id="resetCode" placeholder="6位验证码" maxlength="6">
                </div>
                <div class="form-group">
                    <label>新密码</label>
                    <input type="password" id="resetNewPassword" placeholder="至少6位">
                </div>
                <button class="cr-btn cr-btn-gold" onclick="doResetPassword()">重置密码</button>
                <a class="forgot-link" onclick="showLogin()" style="display:block;margin-top:12px;">← 返回登录</a>
            </div>

            <!-- 注册表单 -->
            <div id="registerForm" class="hidden">
                <div class="form-group">
                    <label>选择角色</label>
                    <div class="role-selector">
                        <div class="role-option active" onclick="selectRole('student')">
                            <div class="icon">👨‍🎓</div>
                            <div class="label">学生</div>
                        </div>
                        <div class="role-option" onclick="selectRole('coach')">
                            <div class="icon">👨‍🏫</div>
                            <div class="label">教练</div>
                        </div>
                    </div>
                </div>
                <div class="form-group">
                    <label>邮箱</label>
                    <input type="email" id="registerEmail" placeholder="请输入邮箱地址">
                </div>
                <div class="form-group">
                    <label>密码</label>
                    <input type="password" id="registerPassword" placeholder="密码至少 6 位">
                </div>
                <button class="cr-btn cr-btn-gold" onclick="handleRegister()">注册</button>
                <button class="cr-btn cr-btn-ghost" onclick="showLogin()">返回登录</button>
            </div>
        </div>
    </div>

    <script src="/js/api.js?v=1.9.4"></script>
    <script src="/js/auth.js?v=1.9.4"></script>
    <script src="/js/ui.js?v=1.9.4"></script>
    <script src="/js/settings.js?v=1.9.4"></script>
    <script src="/js/audio.js?v=1.9.4"></script>
    <script>
        let selectedRole = 'student';

        function selectRole(role) {
            selectedRole = role;
            document.querySelectorAll('.role-option').forEach(function(o) { o.classList.remove('active'); });
            event.currentTarget.classList.add('active');
        }

        function showRegister() {
            document.getElementById('loginForm').classList.add('hidden');
            document.getElementById('registerForm').classList.remove('hidden');
        }

        function showLogin() {
            document.getElementById('registerForm').classList.add('hidden');
            document.getElementById('forgotForm').classList.add('hidden');
            document.getElementById('loginForm').classList.remove('hidden');
        }

        function showForgotPassword() {
            document.getElementById('loginForm').classList.add('hidden');
            document.getElementById('forgotForm').classList.remove('hidden');
        }

        async function sendResetCode() {
            var email = document.getElementById('forgotEmail').value.trim();
            if (!email) { UI.showMessage('请输入邮箱', 'error'); return; }
            try {
                await Api.post('/auth/forgot-password', { email: email });
                UI.showMessage('验证码已发送到您的邮箱，请查收', 'success');
            } catch(e) {
                UI.showMessage('验证码已发送到您的邮箱，请查收', 'success');
            }
        }

        async function doResetPassword() {
            var email = document.getElementById('forgotEmail').value.trim();
            var code = document.getElementById('resetCode').value.trim();
            var pw = document.getElementById('resetNewPassword').value;
            if (!email || !code || !pw) { UI.showMessage('请填写所有字段', 'error'); return; }
            if (pw.length < 6) { UI.showMessage('密码至少 6 位', 'error'); return; }
            try {
                await Api.post('/auth/reset-password', { email: email, code: code, new_password: pw });
                UI.showMessage('密码已重置，请登录', 'success');
                showLogin();
            } catch(e) {
                UI.showMessage(e.message || '重置失败，请检查验证码', 'error');
            }
        }

        async function handleRegister() {
            var email = document.getElementById('registerEmail').value;
            var password = document.getElementById('registerPassword').value;

            if (!email || !password) { UI.showMessage('请填写邮箱和密码', 'error'); return; }
            if (password.length < 6) { UI.showMessage('密码至少 6 位', 'error'); return; }

            try {
                var data = await Api.register(email, password, selectedRole);
                UI.showMessage('注册成功！正在跳转...', 'success');
                setTimeout(function() {
                    showLogin();
                    document.getElementById('loginEmail').value = email;
                }, 1500);
            } catch (error) {
                UI.showMessage(error.message || '注册失败', 'error');
            }
        }

        // Remember Me: 自动填充记住的邮箱
        (function() {
            var saved = localStorage.getItem('rememberedEmail');
            if (saved) {
                document.getElementById('loginEmail').value = saved;
                document.getElementById('rememberMe').checked = true;
            }
        })();

        async function handleLogin() {
            var email = document.getElementById('loginEmail').value;
            var password = document.getElementById('loginPassword').value;

            if (!email || !password) { UI.showMessage('请填写邮箱和密码', 'error'); return; }

            try {
                var data = await Api.login(email, password);
                Auth.setSession(data.token, data.user);
                // 记住账号
                if (document.getElementById('rememberMe').checked) {
                    localStorage.setItem('rememberedEmail', email);
                } else {
                    localStorage.removeItem('rememberedEmail');
                }
                UI.showMessage('登录成功！正在跳转...', 'success');
                Auth.redirectAfterLogin(data.user);
            } catch (error) {
                UI.showMessage(error.message || '登录失败', 'error');
            }
        }

        document.addEventListener('keypress', function(e) {
            if (e.key === 'Enter') handleLogin();
        });

        // Init audio on load
        Audio.init();
    </script>
</body>
</html>
